Chicago have been playing state fairs and casinos for so long that it's easy to forget that back in the Seventies they were one of the biggest bands in the country. The group's popularity peaked around 1975, when they went on a massive co-headlining tour with the Beach Boys. Critics dubbed the package "Beachago" and Peter Cetera and Chicago's horn section even joined the Beach Boys during their encores. Chicago is revisiting this period with the release of Live In '75, which chronicles their set at Maryland's Capital Centre in June of 1975. Sadly, no tracks from the Beach Boys are on the disc - but it does feature Chicago covering "I'm A Man" and "Got To Get You Into My Life."

The disc hits stores on May 24th. Check out an exclusive stream of Chicago's opening number "Introduction."